Railway-switch structure.



H. L. MILLER @L R. HSHIEW.

RAILWAY SWITCH .STRUCWHE..

APPLICMLDIN FILED JULY 30| WIT.

Mmm' Feb. 5 19m H. L. MILLER L R. B. FlSHER'.

RAILWAYSWITCH STRUCTURE.

APPucATloN naamw ao. ma.

M @I Patmted Feb. 5, 191%8.

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WJ 9 Z6' W@ mis# f/wcffw. m /QWW f3 M HARRY L. MILLER AND RAYMOND B. FISHER, 0F CHICAGO, ILLINOIS, ASSIGNORS T0 THF. BUDA COMPANY, OF CHICAGO, ILLINOIS, A CORPORlATION.

RAILWAY-SWITCH STRUCTURE.

Specification of Letters Patent.

Patented Feb., 5, 19de.

Application ledJuly 30, 1915. Serial No. 42,820.

To all whom t may concern:

Be it known that we, HARRY L. MILLER and RAYMOND B. Fisrrnn, citizens of the United States, residingin Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway-Switch Structures, of which we declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

The present inventionv has for one of Vits objects to provide improved means for holding down a pivoted switch point.` A further object of the invention .is to simplify and improve that part of the structure adjacent theupivot end of the switch. .The invention consists in the features/of novelty hereinafter described, illustrated in the accompanying drawings and pointed out inthe claims at the end of this specification.

Figure 1 is a planview of the rear end of a structure embodying the present invention. Fig. 2 is a View in vertical section on line 2-2 of F ig. l. Fig. 3 is a vertical cross section on line 3 3 of Fig. l. Fig. 4 is a view in vertical section on line 4-4 of Fig. l. Fig. 5 is a detail view in horizontal section at line'- Fig. 2 through the pivot pin of the switch tongue and through its bearing in the base block.

l and 2 designate the track rails and 3 and 4 denote the guard rails. The ends of the rails l and 3 are embedded in the casting operation in a cast iron base block 5 to the outer sides of which the rails 2 and 4 are united by through bolts 6, (see Figs. l, 3) these bolts passing through the webs of the rails 2' and 4.

Within the upper face of the cast metal base block 5 is formed a cylindrical recess 5 adapted to receive the circular heel end of the switch tongue 7 that lits snugly but revolubly within the recess of the base block. Beneath the base block 5 extends a base plate 9 that extends also from side to side of the structure beneath the base flanges of the rails 2 and 4, (see Figs. l, 3) and to the outer flanges of these rails the base plate 9 is connected by means of rivets or bolts 10. Preferably, also, the base plate9 is connected with the base block or casting 5 by vertically disposed rivets 10a (see Fig. l). By thus uniting the rails 2 and 4 to the base block'by the through bolts 6 `and by the rivets or bolts l0, an extremely stron and rigid construction is secured. The base plate 9 is furnished at its side edges with holes l1 (see Fig. l) whereby it may be conveniently spiked in place. The central portion o1 the base block 5 at the rear of the heel of the switch tong-ue extends upwardly to a point adjacent the tops of the heads of the rails l and 3, thus effectively bracing these rails, and it will be Yluiderstood, of course, that the webs of these rails l and 3 will be perforated to lperinit the cast metal to flow therethrough in the caste ing operation. From the cylindrical recess in the base block 5 extends forwardly a recess or channel l2 in which rests the projecting portion of the switch tongue T. The base block is formed beneath the circular recess with a vertical eyliiulriml recess to receive a pivot pin 14 that depends cent rally from the heel of the switch tongue 7 and is formed integral therewith. Preferably, the rear portion of the pivot pin' l1' is inachined o-r cut away, tliereby leaving a slight clearance fas shown at ti Figs. l, 5 between the rear portion of the pivot pin and the adjacent face of the cylindrical recess that receives it, so that the backward and downward pressure on the pivot piu (as hereinafter explained) shall more effectively serve to hold down the front end of the switch tongue. ln this pivot pin i4 is formed a notch or recess l5 preferably of the shape shown and adapted to receive. a crank arm 1G that is formed on the rock shaft 17 that extends t1.'a1isversely of the structure. The base block is chamberi-d to receive 'the rock shaft 17 and the rock shaft is journaled in sockets formed in the base block 5, as clearly shown in Fig. t3.

Adjacent its outer end the rock shaft li' is provided with an arm 1S having a hole therein through which passes a bolt 1.9. Between the head 2() of the bolt 19 and the arm 18 is placed a. coil spring 2l that exerts downward pressure on the arm 18 and through the medium of the rock shaft l? causes the rock arm 1G to force downwardly the pivot pin ll; thereby holding the switch tongue il' lirmly to its seat and against danger of kicking.

The bolt lf) extends through a hole iu the base plate l) and on the end of this bolt is placed a washer Vand screw nut of suitable construction. f

Upon thev base plate 9 at one side of the structure is mounted a channel shaped box 25 havingthe ends of its side walls shaped, as at'26,'to fit between the head and base of the guard rail 4, and from the side walls be lifted in order to permit access for the purpose of adjusting the bolt 19. Y

From the foregoing description it will be seen that when the parts are in the assemi bled position shown in the drawings, the

pressure of the spring 21 upon the arm 18 of the rock shaft 17 will serve to cause the arm 16 ofV this rock shaft to hold down the tongue 7 from point to heel, and as desired, the bolt 19 may be adjusted to vary thetension of the spring 21. The pressure of the rock shaft arm 16 on the inclined lower surface of the recess of the-pivot pin 14 not only exerts a downward pressure on the pivot pin but also a rearward pressure, thereby insuring a firm bearing of the `switch tongue on theA base block. and also against the ends of the rails 1 and 6.

By uniting the endsV of the rails 1 and 3 with the cast metal base block 5, anl extremely firm and rigid union of these parts is secured, and by bolting the rails 2 and 4 tothe cast metal base block and to a base plate extending beneath suchV block, great strength and rigidity is given to the structure, while the loss incident to defective castings is materially less than would be the case if the outer rails 2 and 4 were cast integral with the base block.

Inasmuch as the pivot pin 14 has a bearing at its sides and front in the cylindrical recess formed in theV cast metal base block 5 both above and'belowthe notch or recess 15 that receives the arm 16 in the rock shaft, the pin will effectively serve to guard against any forward movement of the tongue incident to thrusts upon its heel end and Vwill guard also against any lateral rocking of the switch tongue. It will be noticed, also, that the arm 18 at the outer end of the rock shaft 17 is `horizontally disposed so that the bolt 19 is in vertical position where it can be most conveniently reached for ad- Copies of this patent may -be obtained for with a recess having an inclined lower wall justment and without unnecessarily extendin the box in which the bolt is situated.,-

Iaving thus described our invention, what we claim as new and desire to secure by Letters Patent is- 1. In a switch structure, the combination with a suitable base or support, of a tongue having a pivot pin dependent therefrom, a bearing for said pin formed in said base or support and said pin being provided upon its front side with a recess, a rock shaft extending transversely beneath the tongue in front of said pivot pin and having an arm entering said pin recess, and means connected to said rock shaft at its outer end for causing it to exert pressure upon the pivot pin of the tongue.

2. In a switch tongue, the combination with a suitable base or support, of a tongue pivotally .mounted therein and having a dependent pivot pin provided at its front with a recess, a bearing for said pivot pin formed in said base or support and extending below said recess, a rock shaft extending transversely beneath the tongue in front of said pivot pin and having two arms one of which projects into the recess in the pivot pin, a bolt engaging the other arm of said rock shaft, and a spring mounted upon said bolt for causing the rock shaft to exert pressure upon the pivot of the tongue.

3. In a switch structure, the combination with a suitable base or support, of a tongue having a pivot pin dependent therefrom, a

rock shaft extending transversely beneath the tongue adjacent its heel and having an arm engaging the recessed pivot pin of said tongue and having at its outer end a horizontally disposed arm, and. a vertically disposed bolt passing through said arm at the outer end of the rock shaft .to exert pressure upon the heel pivot of the tongue.

4. In a switch structure, the combination with a cast metal base or support and with a plate extending beneath and bolted thereto, of a tongue pivotally mounted in said base and having a depending pin provided a rock shaft journaled in said base and ex-a tending transversely beneath the tongue opposite said recess and having two arms one of which projects into said recess and the other of which is horizontally arranged at the'outer end of said rock shaft, a vertically disposed bolt passing throu'h the other arm of said rock shaft and tirough said plate, and an adjustable nut and spring mounted upon said bolt.

HARRY L. MILLER.. RAYMOND B. FISHER.

ve cents each, by addressing the Commissioner of Patents, y l ,y A Washington, D. C. 

